everything-dev/dist/ui/version-check.mjs

A consolidated product package for building Module Federation apps with oRPC APIs.

//#region src/ui/version-check.ts
/**
* The soft-refresh poller (atomic-deploys 10): a browser-side loop fetching
* the host's `/.well-known/version` and reporting when the served deploy
* fingerprint differs from the one this document was rendered from. No live
* container swap — the banner decides whether to reload (old bytes are
* retained, so a reload is always safe). Polling pauses while the document
* is hidden and reports at most once.
*/
const DEFAULT_POLL_INTERVAL_MS = 6e4;
function startVersionWatch(input) {
	const intervalMs = input.intervalMs ?? DEFAULT_POLL_INTERVAL_MS;
	const fetchImpl = input.fetchImpl ?? globalThis.fetch;
	const doc = input.documentRef ?? document;
	const endpoint = input.endpoint ?? "/.well-known/version";
	let reported = false;
	let timer = null;
	const poll = async () => {
		if (reported) return;
		try {
			const response = await fetchImpl(endpoint, { headers: { accept: "application/json" } });
			if (!response.ok) return;
			const body = await response.json();
			if (body.fingerprint && body.fingerprint !== input.currentFingerprint) {
				reported = true;
				input.onNewVersion();
			}
		} catch {}
	};
	const tick = () => {
		if (doc.visibilityState !== "visible") return;
		poll();
	};
	timer = setInterval(tick, intervalMs);
	const onVisibility = () => tick();
	doc.addEventListener("visibilitychange", onVisibility);
	return { stop: () => {
		if (timer) clearInterval(timer);
		timer = null;
		doc.removeEventListener("visibilitychange", onVisibility);
	} };
}

//#endregion
export { startVersionWatch };
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